Gingival redness and bleeding is mainly caused by bacterial infection. The gums are pink, tough, and the surface is not smooth, and there are some small pits called Diancai. If the gums are inflamed, the blood vessels in the gums will be congested or dilated, which will make the gums bright red, and there will be inflammatory exudates, which will make the gums edema, soft and bright, and the spots disappear, accompanied by a certain degree of pain.

In addition, when touching, chewing and brushing teeth, there will be bleeding, mainly because the dilated capillaries inside will rupture after being stimulated by the outside world, so there will be bleeding. Therefore, if the gums are red, swollen and bleeding, you should go to the stomatology department of a regular hospital for periodontal treatment as soon as possible, and control plaque and inflammation through periodontal treatment and oral education.